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Development and application of LSP micro shock driver

LSP微震驱动器的研制与应用

基本信息

批准号：
18560153
负责人：
HIRAHARA Hiroyuki
金额：
$ 2.49万
依托单位：
Saitama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560153/
关键词：
Micro shock wave Laser irradiation Optical measurement Metal ablation plasma Self similar Energy conversion coe3fficient Laser shock peening 圧縮・非圧縮流衝撃波マイクロ流れピーニングマイクロデバイス

项目摘要

When we irradiated a laser on the solid surface (a surface of metal), a solid is excited by light energy of a laser and plasma will be induced at the surface, so as a result, a shock wave is formed in an ambient gas by plasma. The present study performed a study to utilize this shock wave effectively. We performed an experiment measurement of a shock wave to occur by collection of light of a laser. The shock wave generated it by irradiating a laser to various kinds of metal plates. I used aluminum, stainless steel, brass, titanium for a metal plate. We performed an experiment the limit around that shock wave outbreak was confirmed for 2006 having enforced the irradiation strength with comparatively big energy strength in 2007 laser. With this strength, I observed a shock wave or a state to occur by shadow graphology and BOS method optically in an observation domain of 1mm around * 1mm and demanded a time change of a Mach number of a shock wave. The measurement of a shock wave demanded a position of a shock wave every 20 ns. Measurement range several of this case were full of the measurement neighbor by a unit of ten μm, difficulty, but reliable data were acquired by many experiment accomplishment. I was located between spread characteristics of a spherical surface wave and plane wave when it pursued the degree for a function of time by position data of a provided shock wave, and it became clear to be considerably near in a spread characteristic of a spherical surface wave. A Mach number just after shock wave outbreak was considerable high speed, and it was shown that a thing of around 15 was provided in a Mach number. A Mach number of a shock wave did not show dependence for metal properties of matter, and the result that was against an original prediction was provided.

当我们将激光照射在固体表面（金属表面）上时，固体被激光的光能激发，并且将在表面处感生等离子体，因此，等离子体在环境气体中形成冲击波。本研究进行了一项研究，以有效地利用这种冲击波。我们进行了一个实验测量的冲击波发生的激光器的光收集。冲击波通过将激光照射到各种金属板上而产生。我用铝，不锈钢，黄铜，钛做金属板。我们进行了一项实验，在2007年激光器中以较大的能量强度加强了辐照强度，2006年确认了冲击波爆发的极限。利用这种强度，我在1mm × 1mm的观察范围内通过阴影图形学和BOS方法光学地观察冲击波或发生的状态，并要求冲击波的马赫数的时间变化。冲击波的测量要求每20 ns测量一次冲击波的位置。这种情况下的测量范围以十μm为单位充满了测量邻域，难度很大，但通过多次实验获得了可靠的数据。当通过所提供的冲击波的位置数据来追踪时间函数的程度时，I位于球面波和平面波的扩展特性之间，并且变得清楚的是，在球面波的扩展特性中相当接近。冲击波爆发后的马赫数是相当高的速度，并且表明马赫数提供了大约15的东西。冲击波的马赫数没有表现出对物质的金属性质的依赖性，并且提供了与原始预测相反的结果。